Question

A stone is dropped down a well. When it hits the bottom of the well, it is travelling at 20 m s-1. The mass of the stone is 20 g.
a. Calculate the kinetic energy of the stone as it hits the bottom of the well.
b. What is the gravitational potential energy of the stone at the top of the well?
c. Calculate the height of the well.​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

GIVEN :v=20m/s

m=20g

kinetic energy =1/2mv^2

1/2×m×v×v

1/2×20×20×20

4000/1000kg m/s

4kg m /s ANS